this may be well known but the temperature here in the bay area has wamred up a bit - to over 60 (it had been in the 40's and 50's). on my commute, the auto-stop would not kick in until about 10 minutes. now, the auto-stop is kicking in almost immediately - before i get to the end of my street. i surmise this is having a nice effect on my mpg as it has also risen on this tank. anyone else notice this?